Nat.LE: def of bend-lawful-stdlib@0.1.0.0
Import: import bend-lawful-stdlib@0.1.0.0/src/nat.bend as Nat
Lines 27-35 of bend-lawful-stdlib@0.1.0.0/src/nat.bend: https://jend.leeeet.dev/read.txt?path=bend-lawful-stdlib@0.1.0.0/src/nat.bend&start_line=27&end_line=35

import Base

# a <= b, as a type: Unit when it holds, Empty when it does not.
def LE(a: Nat, b: Nat) -> Data:
  match a b:
    case 0n y:
      Unit
    case 1n+x 0n:
      Empty
    case 1n+x 1n+y:
      LE(x, y)

Uses (3):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Empty
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Unit